EP 1947054 A4 20111109 - METHOD OF PRODUCING CHLORINE GAS, AQUEOUS SODIUM HYPOCHLORITE SOLUTION AND LIQUID CHLORINE
Title (en)
METHOD OF PRODUCING CHLORINE GAS, AQUEOUS SODIUM HYPOCHLORITE SOLUTION AND LIQUID CHLORINE
Title (de)
VERFAHREN ZUR HERSTELLUNG VON CHLORGAS, WÄSSRIGER NATRIUMHYPOCHLORITLÖSUNG UND FLÜSSIGEM CHLOR
Title (fr)
PROCEDE DE FABRICATION DE CHLORE GAZEUX, D UNE SOLUTION AQUEUSE D HYPOCHLORURE DE SODIUM ET DE CHLORE LIQUIDE
Publication
Application
Priority
- JP 2006307925 W 20060414
- JP 2005300751 A 20051014
Abstract (en)
[origin: EP1947054A1] It is intended to provide methods of producing a chlorine gas having a small bromine content, an aqueous sodium hypochlorite solution having a small bromic acid content, and liquid chlorine having a small bromine content. More specifically, a chlorine gas is produced by a method comprising the steps of: (A) washing a chlorine gas that contains bromine, in a gas washing unit composed of a packed column or a tray tower, wherein the chlorine gas introduced via a lower part of the gas washing unit is brought into counterflow gas/liquid contact with a liquid chlorine introduced via an upper part of the gas washing unit; and (B) taking out a purified chlorine gas thus washed, via the upper part of the gas washing unit, wherein a weight ratio of the chlorine gas and the liquid chlorine introduced in the step (A) is 1/1.0 to 1/0.3.
IPC 8 full level
C01B 7/07 (2006.01); C01B 7/075 (2006.01); C01B 11/06 (2006.01)
CPC (source: EP KR US)
C01B 7/07 (2013.01 - KR); C01B 7/0743 (2013.01 - EP US); C01B 7/075 (2013.01 - EP KR US); C01B 11/06 (2013.01 - KR); C01B 11/062 (2013.01 - EP US)
Citation (search report)
- [XI] WO 2004018355 A1 20040304 - NORAM ENGINEERING AND CONSTRUC [CA], et al
- [A] US 2700431 A 19550125 - SUTTER ROBERT C
- [A] US 3443902 A 19690513 - TSAO UTAH
- [A] "Ullmann's Encyclopedia of Industrial Chemistry", vol. A6, 1 December 1986, VCH, article P. SCHMITTINGER: "Chlorine", pages: 463 - 465, XP002658290
- See references of WO 2007043203A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1947054 A1 20080723; EP 1947054 A4 20111109; EP 1947054 B1 20140305; CA 2625719 A1 20070419; CN 101287676 A 20081015; CN 101287676 B 20101013; KR 100929472 B1 20091202; KR 20080055926 A 20080619; US 2008224094 A1 20080918; US 2011293505 A1 20111201; US 8048203 B2 20111101; US 8685147 B2 20140401; WO 2007043203 A1 20070419
DOCDB simple family (application)
EP 06731861 A 20060414; CA 2625719 A 20060414; CN 200680038259 A 20060414; JP 2006307925 W 20060414; KR 20087009221 A 20060414; US 201113206990 A 20110810; US 8325406 A 20060414